Availability of LiDAR data in Washington State LiDAR Workshop January 3rd 2008 Terry Curtis, C.P....
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Availability of LiDAR data in Washington State LiDAR Workshop January 3rd 2008 Terry Curtis, C.P. Photogrammetry Supervisor Wash. Dept. of Natural Resources
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Transcript of Availability of LiDAR data in Washington State LiDAR Workshop January 3rd 2008 Terry Curtis, C.P....
Availability of LiDAR data in Washington State
LiDAR Workshop January 3rd 2008
Terry Curtis, C.P.
Photogrammetry Supervisor
Wash. Dept. of Natural Resources
DNR - Land Management and Regulation5 Million acres of Trust Lands
Some LiDAR Misconceptions• LiDAR data is NOT “Imagery”• It’s just a bunch of elevation POINTS……
• LiDAR data is NOT “perfect”…• Vegetation is the enemy
• LiDAR does NOT replace Aerial Photography• Aerial photography contains true SPECTRAL information and actual
IMAGERY, and should be used in conjunction with LiDAR.
LiDAR Compare
Aerial Compare
• LiDAR data isn’t “FREE”• Yes, there is some Publicly available or Public Domain data
• SOMEONE had to pay for it initially
• LiDAR is EXPENSIVE !!
WHERE can I obtain existing LiDAR data ??
• Counties
• Federal Agencies (USGS, NOAA)
• Other Public Agencies
• Private Companies (good luck!)
• Puget Sound LiDAR Consortium (PSLC)
PSLC Webpage
History of LiDAR in PNW 1996 > Present
HISTORY MAP
Current BASIC data specifications
PSLC Status Map
Status Comparison
Known NON-PSLC Data Available, Planned, or In Progress
• USGS/DNR Skagit/Whatcom Project
• DNR Forest Inventory Blocks
• San Juan County
• Spokane County/Avista
Skagit Whatcom
DNR - Image Tree
San Juan Proposed
What if no LiDAR data exists for my project ?
• Issue your own RFP for LiDAR acquisition• Look for PARTNERS to reduce costs• Economy of scale - larger area = lower unit cost• PLAN AHEAD - a MINIMUM of one full year• Few local vendors or vendors with WA experience• Be wary of low-cost proposals• Can use PSLC/Kitsap County CONTRACT
Established specs and pricing
They do the contract admin and QA/QC
Proven track record - knowledgeable scientists and staff
Where Can I learn about…
ASPRS-Portland
Top Surface
Bare Earth
Aerial
LiDAR Apples
Apples
